Also, one final note, 12.4(15)T8 supports named ACL's, as does almost any IOS these days. This is a highly recommended practice.
I have seen several times on our network where someone wants to remove a subnet from a numbered ACL and enters the following command...
no access-list xxx deny ip 18.104.22.168 0.0.0.255 any
Unfortunately, the router just reads this as no access-list xxx and deletes the entire ACL. The recommended way to do this would be as follows...
ip access-list extended
deny ip 22.214.171.124 0.0.1.255 any
deny ip 126.96.36.199 0.0.0.255 any
deny ip 188.8.131.52 0.0.0.255
Named ACL's are also typically easier to find in the config. For example, if you were to use a numbered acl, say ACL 5, and later need to find where all it is used, you would have to search the config for "5" and that could appear many, many times. One final recommendation I make is that you use all caps when naming anything in your configuration. This makes it pretty simple to see what is something you named versus what is part of the routers parser syntax.
We are pleased to announce availability of Beta software for 16.6.3.
16.6.3 will be the second rebuild on the 16.6 release train targeted
towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are
looking for early feedback from customers befor...
Introduction Featured Speakers Luis Espejel is the Telecommunications
Manager of IENova, an Oil & Gas company. Currently he works with Cisco
IOS® and Cisco IOS XE platforms, and NX to some extent. He has also
worked as a Senior Engineer with the Routing P...
In this session you can learn more about Layer 3 multicast and the best
practices to identify possible threats and take security measures. It
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